@font-face {
  font-family: "iconfont"; /* Project id 4582608 */
  src: url('//at.alicdn.com/t/c/font_4582608_ygcu1ybzcq.woff2?t=1718176443213') format('woff2'),
       url('//at.alicdn.com/t/c/font_4582608_ygcu1ybzcq.woff?t=1718176443213') format('woff'),
       url('//at.alicdn.com/t/c/font_4582608_ygcu1ybzcq.ttf?t=1718176443213') format('truetype');
}

.iconfont {
  font-family: "iconfont" !important;
  font-size: 16px;
  font-style: normal;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.icon-xiala:before {
  content: "\e641";
}

.icon-gengduo:before {
  content: "\e7ce";
}
* {
	margin: 0;
	padding: 0;
}

ul {
	list-style: none;
}
li {
	list-style: none;
}
a {
	text-decoration: none;
}

.main-wrapper{
	padding-left: 18%;
}

.aside-nav{
	position: fixed;
	top: 0;
	bottom: 0;
	left: 0;
	width: 18%;
	background-color: #2862b3;
	color: #fff;
}
/* 导航标题 */
.aside-nav .nav-title{
	height: 70px;
	line-height: 70px;
	text-align: center;
	font-size: 24px;
	border-bottom: 1.5px solid #222;
}

/* 导航列表 */
/* 父导航 */
.aside-nav .nav-list .parentNav{
	height: 60px;
	line-height: 60px;
	padding: 0 16px;
	font-size: 20px;
	cursor: pointer;
	
}

.aside-nav .nav-list .parentNav:hover,
.aside-nav .nav-list .item.active .parentNav{
	background-color: #477cd7;
}

.aside-nav .nav-list .parentNav i{
	font-size: 20px;
}

.aside-nav .nav-list .parentNav i:last-child{
	float: right;
}

/* 子导航 */
.aside-nav .nav-list .item.active .subNav{
	display: block;
}

.aside-nav .nav-list .subNav{
	display: none;
}

.aside-nav .nav-list .subNav li a{
	color: #fff;
	display: inline-block;
	width: 100%;
	box-sizing: border-box;
	height: 50px;
	line-height: 50px;
	padding-left: 20%;
}

.aside-nav .nav-list .subNav li a:hover{
	background-color: #477cd7;
}

/* 右侧部分 */
.main-wrapper{
	width: 70%;
	margin: 3%;
}
.menu-item {
	cursor: pointer;
}

.list{
	display: none;
}
.list.active {
	display: block;
}

/* list1 */
h1{
	font-size: 40px;
	font-family: 黑体;
	font-weight: 900;
	margin-bottom: 10px;
}
.img3 a .img4 a{
	margin-top: 40px;
	margin-bottom: 40px;
	text-decoration: none;
}

.img3 
.img4{
	position: relative;
	display: flex;
}

.img3 .item1 
.img4 .item2{
	width: 100%;
	height: 100%;
}

.img3 .item1 img{
	margin-top: 40px;
	width: 50%;
	float: left;
	border: 1px solid rgb(27, 15, 203);
}

.bo1 {
	opacity: 0;
	position: absolute;
	width: 56px;
	height: 56px;
	left: 50%;
	top: 67%;
	background: url(./img/bili.png) no-repeat center center;
	transition: opacity .5s ease-in .5s ;
}

.img3:hover .bo1{
	opacity: 1;
}
.img4 .item2 img{
	width: 35%;
	float: right;
	margin-top: 40px;
	border: 1px solid rgb(27, 15, 203);
}
.bo2 {
	opacity: 0;
	position: absolute;
	width: 56px;
	height: 56px;
	left: 85%;
	top: 67%;
	background: url(./img/bili.png) no-repeat center center;
	transition: opacity .5s ease-in .5s ;
}
.img4:hover .bo2{
	opacity: 1;
}

.text{
	margin-top: 40%;
	font-size: 45px;
	font-weight: 500;
	font-family: 微软雅黑;
}
button{
	width: 100px;
	height: 35px;
	border-radius: 10px;
	background-color: #638cc0;
}
h3{
	font-size: 22px;
}
h4{
	margin-top: 30px;
	font-size: 35px;
	color: #215da7;
}
h4 a{
	color: #fff;
	text-decoration: none;
}
.bi{
	position: relative;
	margin-top: 30px;
	background-color: #638cc0;
	opacity: 0.85;
	border-radius: 20px;
}
.bi img{
	width: 50px;
	height: 50px;
	padding: 8px;
	padding-left: 30px;
}

textarea{
	border-radius: 10px;
	margin-top: 10px;
	width: 100%;
	height: 300px;
}
textarea::placeholder{
	font-size: 20px;
	padding-top: 10px;
}
b{
	color: #5983b6;
}
/* list2 */
.text2{
	margin-top: 10px;
	font-size: 20px;
	line-height: 50px ;
}
.img21{
	width: 90%;
}

/* list5 */
.img51{
	width: 80%;
}

.img71{
	width: 60%;
}
